William j



(No Model.)

W. J. BAYRER.

MACHINE FOR BENDING SHEET METAL. No. 339,729.

Patented Apr. 13, 1886.

N. PETERS, Fmvmmmmr, wamlngam n. a

UNTTED STATES PATENT OFFICE.

vWILLIAM J. BAYRER, OF SOUTHINGTON, CONNECTICUT, ASSIGNOR TO THE PECK,STOV 8U VILCOX COMPANY, OF SAME PLACE.

MACHINE FOR BENDING SHEET METAL.

SPECIFICATION forming part of Letters Patent No. 339,729. dated April13,1886.

Application tiled February 15, 1886. Serial No. 191,927.

To all whom, t may concern.:

Be it known that I, WILLIAM J. BAYRER,

a citizen of the United States, residing at Southington, in the countyof Hartford and State of Connecticut, have invented certain new anduseful Improvements in Machines for Bending Sheet Metal, of which thefollowing is a specication.

My invention relates to improvements in 1o machines for bending sheetmetal, of the class represented in my Patent No. 314,311, dated March24,1885; and one object of my improvement is to locate the handle of thegage-operating mechanism in a more convenient position-viz., at thefront of the machine, instead of at one end.

In thc accompanying drawings, Figure 1 is a front elevation of mymachine, with a part at the middle broken away, so as to show a 2o smallportion in vertical section on a plane immediately in front of thepinion shown in Fig. 2, and Fig. 2 is a plan view of the same, withparts broken away and a portion of the uframe cut out on the line x x ofFig. 1.

The main portion of the machine is like that which has been manufacturedand sold as the Stow Folder, and need not be specifically described.

A is the folding-bar; B, the plate, and C the gage underneath the plate.In Fig. 2 the middle portion of this gage is represented as broken out,in order to better show the other part-s, while that portion of it whichis covered by the plate B is illustrated in broken lines. This gage isprovided with two oblique slots, a c. The gage-bar D is fitted to slidelongitudinally within a groove in the frame and underneath the gage. vItis provided with two inclined studs, b, which extend upward into theslots aa of the gage. The middle portion of this gage-bar is representedas broken away in Fig. 2. Moving the gage-bar to the right or left will,by engagement of the studs b and walls of the slots a, move the gage Cforward or backward, the same as in my aforesaid prior patent.

Instead of moving the gage-bar by means of a screw and nut at one end ofthe machine, I form teeth in the under side of the gage-bar D at itsmiddle portion,thereby forming a rack, c, at said point. Underneath thisrack I journal the pinion f, which meshes into the teeth of the rack c.

(No model.)

At the front end of the shaft d is the operating-handle g. By turningthis handle,shaft, 5 5 and pinion to move the gage-bar D, the gage C ismoved out or in, as may be desired.

When a large amount of the same kind of work is to be done, and it isdesired to set the gage for the entire job, it is important that 6o thegage shall be so rmly held in place as to prevent accidentaldisplacement. To this end I thread the outer end of the shaft d at apoint forward of the handle g, and on said threaded portion I place thenut h. This nut is turned back toward the handle when the gage is to bemoved, and is left in that position until it is desired to lock orfasten the gage for a time. In such case the nut is screwed forwardagainst the front of the frame of the machine, so as to bind the shaft dagainst rotation in either direction, and thereby lock the gage-bar andgage against accidental displacement. By my improvement the gage isreadily and quickly operated, while the rotatory handle for operatingsaid gage is located. at the middle of the front of the machine in avery convenient p0- sition.

The operating-handle g and nut or locking mechanism h are both on thesame shaft near each other in a very convenient position for operation.

I claim as my invention- 1. In a machine for bending sheet metal, thecombination of the gage C, having inclined slots c a, the gage-bar D,having inclined studs Z1 b, and the rack c, the shaft d, the handle g,and the pinion f, .mounted on said shaft and engaging the rack of thegagebar, substantially as described, and for the purpose specified.

2. In a machine for bending sheet metal, the combination of the gage C,gagebar D, for moving said gage, having the rack c, the handle g, shaftd, having the threaded portion in front of said handle, the pinionf,engaging the rack of the gage-bar, and the nut h on the threaded portionof said shaft, substantially as described, and for the purposespecified.

VILLIAM J. BAYRER.

`Witnessesz E. E. Srow, A. M. LEWIs.

